1 Features

• Input voltage range: 1.8 V to 5.5 V

• Output voltage range: 2.2 V to 5.5 V(TPS61033)

– FB connects to VIN output voltage for fixed 5.0

V(TPS61033X)

• Two valley switching current limit options

– TPS61033: 5.5-A typical

– TPS610333: 1.85-A typical

• High efficiency and power capability

– Two 25-mΩ (LS) / 46-mΩ (HS) MOSFETs

– Support up to 2.4 MHz with small L-C

– Up to 93.42 efficiency at VIN = 3.3V, VOUT =

5V, and IOUT = 1A

– Up to 90.78 efficiency at VIN = 3.3V, VOUT =

5V, and IOUT = 2A

• Extend the system operating time

– Typical 20-μA quiescent current into VIN pin

– Typical 5.3μA quiescent current into VOUT pin

– Typical 0.1-μA shutdown current

• ±1.5 Reference voltage accuracy over –40°C to

+125°C

• Power good output with window comparator

• Pin-selectable auto PFM or forced PWM mode at

light load

• Pass-through mode when VIN > VOUT

• Safety and robust operation features

– True disconnection between input and output

during shutdown

– Output overvoltage and thermal shutdown

protections

– Output short-circuit protection

• 2.1-mm × 1.6-mm SOT583 8-Pin package

2 Applications

• Tablet(multimedia)

• Smart speaker

• Mobile POS

3 Description

The TPS61033X is a synchronous boost converter.

The device provides a power supply solution for

portable equipment and smart devices powered

by various batteries and other power supply. The

TPS61033 has 5.5-A (typical) valley switch current

limit and TPS610333 has 1.85-A (typical) valley

switch current limit over full temperature range.

The TPS61033X uses adaptive constant on-time

valley-current-control topology to regulate the output

voltage and operates at 2.4-MHz switching frequency.

There are two optional modes at light load by

configuring the MODE pin: auto PFM mode and

forced PWM to balance the efficiency and noise

immunity in light load. The TPS61033X consumes

a 20-μA quiescent current from VIN at light load

condition. During shutdown, the TPS61033X is

completely disconnected from the input power and

only consumes a 0.1-μA current to achieve long

battery life. The TPS61033X has 5.75-V output

overvoltage protection, output short circuit protection,

and thermal shutdown protection.

The TPS61033X offers a very small solution size with

2.1-mm × 1.6-mm SOT583 package and minimum

amount of external components.